Surname พระมหาดำรง (Phramaha Damrong 
, พระมหาดำรง) , globally, is a very rare cognomen. The family name พระมหาดำรง is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, พระมหาดำรง is the forename as well as the last name.